On 2017-02-21 23:10, Sergey Ryazanov wrote: > Hello, > > I tried to install latest LEDE to RB411AH board. Sysupgrade worked > fine, but device now do not boot at all. Bootloader claims that it > could not find kernel :( > > I tracked down the situation and found that the kernel partition image > generated with assumption that any 64Mb NAND flash IC consists of > pages, the size of which is 512 bytes with an 8-byte spare area. But > my board equipped with Toshiba NAND flash, which consists of pages, > the size of which is 2048 bytes with an 64-byte spare area. > > Even worse, after such reflashing with the corruption of the page > structure, kernel starts thinking that pages are bad and they could > not be used anymore. So I had to install vendor's firmware back with > help of vendor utility to recover pages structure. > > To fix this I see several solutions: > > 1. Generate more images, one for each combination of flash and page > sizes (e.g. xxx-64m-512-sysupgrade.bin, xxxx-64m-2048-sysupgrade.bin) > Pros: quick realization, no sysupgrade code modification > Cons: exponential growth of number of images, unusable due to endless > mess with this set of images. By the way, the 64m image is only named as such, because I didn't know that there were any devices with 64M nand and 2048 byte page size. You should be able to flash the nand-large image on your device just fine. To prevent flashing errors like the one you had, maybe it would be a good first step to add metadata to the image and make sysupgrade set the board type to nand-64m or nand-large depending on the flash parameters.
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